Low doses of ecdysteroids promote muscle building

[Arnold]

The amounts of ecdysteroids in bodybuilding supplements are probably sufficient to stimulate growth of muscle mass, write endocrinologists at the University of Goettingen, Germany, in an article in the Journal of Steroid Biochemistry and Molecular Biology. In animal studies, modest doses of the ecdysteroid 20-hydroxy-ecdysone [structural formula shown below] increased the muscle mass of rats

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